from typing import Union,List,Dict,Any

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


# 定义数据模型
class Item(BaseModel):
    name:str
    price:float
    is_offer:Union[bool,None] = None




@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}


@app.put('/items/{item_id}')
def update_item(item_id:int,item:Item):
    return {"item_price":item.price,"item_id":item_id}
    

    

